Miyamoto doesn't like Haze's drug focus.

[Bodhesatva]

Rath said:
Its true that male teenagers in general like violence more than anyone else, not only that but its obvious.

Its probably something to do with the flood of testosterone that the body provides during puberty that causes it.

There isn't much "probably" about it anymore.

http://www.netdoctor.co.uk/menshealth/feature/men_and_violence.htm
http://mensightmagazine.com/Library/violentboys.htm

Particularly telling is the last article. Relevant text:

"Over the last few years, researchers in both the U.S. and Canada have been measuring testosterone levels among violent male criminals. The average testosterone level of the violent criminal is higher than the average testosterone level of a citizen without a criminal record."

The causal link between increased testerone levels and an affinity for violence is well established. Testosterone reaches its maximal peak, in the average male, at age 18. Therefore, it's not surprising that teenage males, with higher average testosterone levels, are generally more likely to be interested in violent material.

Another possible explanation -- although not as statistically substantiated -- is that young teens (of both sexes, but especially males) are fascinated by that which they are forbidden when younger. Sex is one of these things, as is violence. Joseph Conrad referred to this as the "fascination with the abomination," in Heart of Darkness, and while slightly to grand a literary notion for such a pedestrian empirical observation, it does seem appropriate.